Question: Which platinum isotope has the most excess mass?
Paraphrase: Which platinum isotope has the foremost overabundance mass
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q19475 . ?ent wdt:P2160 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: platinum-208, platinum-207, platinum-166, platinum-167, platinum-206